Isle Royale Rainfall Forecast

Today 18 Jul
30%
Sat 19 Jul
35%
Sun 20 Jul
No Rain
Mon 21 Jul
10%
Tue 22 Jul
35%
Wed 23 Jul
35%
Thu 24 Jul
20%

Isle Royale Rainfall Statistics

July Rainfall

Copper Harbor (58.4 miles)

Total Rainfall 2025
13.3in
Daily Average 2025
0.1in
Wettest Day 27 June, 2025
0.9in
Wet Days 2025
80/199 (40%)
Total Rainfall June
1.9in
Daily Average June
0.1in
Wettest Day 27 June, 2025
0.9in
Wet Days June
7/30 (23%)
Total Rainfall July
1.7in
Daily Average July
0.1in
Wettest Day 15 July, 2025
0.6in
Wet Days July
5/18 (28%)

Climate (2010–Present)

Copper Harbor (58.4 miles)

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Annual Average 2020–2024
26.8in
Monthly Average 2020–2025
2.3in
Daily Average 2020–2025
0.1in
Wettest Day 23 July, 2021
2.7in

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